tonal tonal a sound consisting of a single frequency. Related Articles: Detection Threshold in Animal HearingAcoustic Masking in MammalsSpecialized Sounds in Cetacean CommunicationWhat sounds can animals hear?Ross SealSouthern Right WhalePersonal Water Craft (PWC)Tidal TurbineNassau Grouper Holly Morin2022-01-07T11:41:11-05:00